CVE-2008-1531

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-03-27 · updated 2026-06-16

Description

The connection_state_machine function (connections.c) in lighttpd 1.4.19 and earlier, and 1.5.x before 1.5.0, allows remote attackers to cause a denial of service (active SSL connection loss) by triggering an SSL error, such as disconnecting before a download has finished, which causes all active SSL connections to be lost.

Affected products

Debian Linux: 4.0
lighttpd: through 1.4.19; from 1.5 before 1.5.0 — fixed in 1.5.0

How to fix

Upgrade to a fixed version: lighttpd 1.5.0. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2008-05/msg00000.html
http://secunia.com/advisories/29505
http://secunia.com/advisories/29544
http://secunia.com/advisories/29636
http://secunia.com/advisories/29649
http://secunia.com/advisories/30023
http://security.gentoo.org/glsa/glsa-200804-08.xml
http://trac.lighttpd.net/trac/changeset/2136
http://trac.lighttpd.net/trac/changeset/2139
http://trac.lighttpd.net/trac/changeset/2140
http://trac.lighttpd.net/trac/ticket/285#comment:18
http://trac.lighttpd.net/trac/ticket/285#comment:21

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